When should a boiler never be dumped?

A boiler should never be dumped when it is hot because doing so can lead to thermal shock and potentially cause damage to the boiler. When water is dumped from a hot boiler, it can create a rapid temperature change that stresses the metal components. This stress can result in cracking or even catastrophic failure of the boiler structure. It's essential to allow the boiler to cool down to a safe temperature before performing a dump to prevent such dangerous conditions.

In contrast, dumping a boiler when it is cold or during maintenance can be done safely, as the risk of damage from thermal shock is significantly reduced. Ensuring that operational protocols are respected during these situations protects the integrity of the boiler and enhances safety in the plant.